<template>
    <div class="todo-footer" v-show="total">
        <label for="">
            <input type="checkbox" name="" id="" v-model="isAll">
        </label>
        <span>
            <span>已完成{{doneTotal}}</span>/全部 {{total}}
        </span>
        <button class="btn btn-danger" @click="clearAll">清除已完成任务</button>
    </div>
</template>

<script>
export default {
    name:'MyFooter',
    props:['todos','checkAllTodo','clearAllTodo'],
    computed:{
        total(){
            return this.todos.length
        },
        doneTotal(){
            return this.todos.filter(item => item.done).length
        },
        // isAll(){
        //     return this.total === this.doneTotal && this.total >0
        // }
        isAll:{
            get(){
                return this.total === this.doneTotal && this.total >0
            },
            set(e){
                 this.checkAllTodo(e)
            }
        }
    },
    methods: {
        // checkAll(e){
        //     this.checkAllTodo(e.target.checked)
        // }
        clearAll(){
            this.clearAllTodo()
        }
    },
}
</script>

<style scoped>
.todo-footer{
    height: 40px;
    line-height: 40px;
    padding-left: 6px;
    margin-top: 5px;
}
.todo-footer label{
    display: inline-block;
    margin-right: 20px;
    cursor: pointer;
}
.todo-footer label input{
    position: relative;
    top: -1px;
    vertical-align: middle;
    margin-right: 5px;
}
.todo-footer button{
    float: right;
    margin-top: 5px;
}
</style>